Case Study: When a Mild Shoulder Ache Was More Than a Simple Shoulder Problem

Background

Shoulder pain is one of the most common musculoskeletal complaints encountered in clinical practice. While many cases arise from rotator cuff dysfunction, bursitis, or joint-related conditions, clinicians should remain alert to less common presentations that may initially appear deceptively mild.

This observational case highlights the importance of careful physical examination, collaborative clinical assessment, and recognising a spontaneous rupture of the long head of the biceps tendon despite the absence of significant trauma.

Patient Presentation

A 50-year-old man attended the clinic complaining of a persistent, mild aching sensation affecting one shoulder.

Unlike many shoulder presentations, the patient did not describe severe pain.

Instead, he reported that the shoulder simply felt uncomfortable, weak, and "not quite right." The symptoms had persisted without obvious improvement.

The patient denied any significant injury, heavy lifting, sporting accident, or traumatic event that could readily explain the presentation.

Initial Clinical Assessment

A comprehensive shoulder examination was performed.

Range of motion remained relatively well preserved, and there were no obvious signs suggesting significant rotator cuff pathology or advanced glenohumeral joint disease.

Although the patient reported weakness and a persistent dull ache, the overall presentation appeared unusually mild for the level of functional concern described.

Because the findings did not completely explain the patient's symptoms, a second clinical opinion was requested from a senior chiropractor.

Collaborative Assessment

During the second examination, careful observation identified a subtle but important abnormality.

A small bulging prominence was noted near the front of the shoulder extending toward the axillary region when the patient contracted his arm.

Palpation demonstrated an abnormal soft tissue contour that differed from the opposite side.

The patient was asked whether any previous healthcare practitioner had examined this finding specifically.

He explained that he had previously attended a general practitioner and had been reassured that the symptoms represented a routine shoulder problem.

Clinical Reasoning

The senior chiropractor demonstrated the anatomical relationship of the long head of the biceps tendon and explained to the junior clinician why the presentation appeared inconsistent with a routine shoulder strain.

The altered contour became more apparent during muscle contraction, raising suspicion of a proximal rupture of the long head of the biceps tendon.

Although many tendon ruptures are associated with significant trauma, proximal long head biceps tendon rupture may also occur spontaneously.

Age-related degeneration, chronic tendon wear, repetitive microtrauma, and gradual weakening of tendon fibres may eventually result in rupture during normal daily activities without the patient recalling any major injury.

This mechanism appeared consistent with the patient's presentation.

Clinical Discussion

One of the most interesting aspects of this case was the relatively mild pain.

Patients often expect tendon ruptures to produce immediate severe pain following a dramatic injury.

However, spontaneous rupture of a chronically degenerated long head of the biceps tendon may present with surprisingly modest symptoms.

Instead of severe pain, patients may notice:

• Persistent shoulder aching

• Weakness

• Altered muscle contour

• Cosmetic change during muscle contraction

• Loss of endurance rather than severe disability

This can easily be mistaken for an uncomplicated shoulder strain if careful observation is not performed.

Clinical Reflection

This case highlights the value of slowing down when the clinical presentation does not completely fit the expected pattern.

The patient's symptoms alone did not immediately suggest tendon rupture.

Instead, the diagnosis became more apparent through careful observation, comparison during movement, and collaborative discussion between clinicians.

It also served as an important learning opportunity, demonstrating how mentorship and second opinions can strengthen clinical reasoning and improve patient assessment.

Key Clinical Lessons

• Mild symptoms do not always indicate minor pathology.

• Careful visual observation is an essential component of shoulder examination.

• Proximal long head biceps tendon rupture may occur without major trauma.

• Degenerative tendon changes may predispose patients to spontaneous rupture during ordinary daily activities.

• When examination findings appear inconsistent with the patient's symptoms, obtaining a second clinical opinion may improve diagnostic accuracy.

• Collaborative clinical learning benefits both practitioners and patients.

Important Disclaimer

This anonymised observational case is presented for educational purposes only.

The observations described represent one patient's presentation and should not be interpreted as establishing a diagnosis without appropriate clinical examination and, where indicated, further imaging or specialist assessment.

Persistent shoulder pain, weakness, or changes in muscle contour should be assessed by an appropriately qualified healthcare professional.